The purpose of this study is to understand the role and function of the Election Winning Institution as PKB party public relations and to analyze the communication strategies applied in the 2019 election. The research method used is descriptive qualitative, where data is collected through interview, observation, and documentation techniques. The results of the study indicate that the role and function of the Election Winning Institution as Public Relations in PKB are to provide information, convince the public, and generate public interest. Meanwhile, the communication strategy carried out in winning the 2019 Legislative Election are to strengthen friendships with Nahdliyyin scholars and carry out door-to-door communication.